The role of adhesive powder in tile adhesive

The emergence of ceramic tile adhesives has ensured the reliability of ceramic tile adhesion to a certain extent. Different construction habits and work methods require different construction properties for tile adhesives.In the current domestic ceramic tile paste construction, thick paste way (traditional adhesive backing paste) is still the mainstream construction method, when used in this way, the requirements of the ceramic tile binder: easy to mix; easy to apply glue, non-stick knife; good adhesion; good anti-slip. With the development of ceramic tile binder technology and construction process improvement, trowel method (thin paste method) is also gradually adopted, the use of this construction method, the requirements of the ceramic tile binder: easy to mix; spreading to be good, non-stick knife; anti-slip performance should be good; good wetting of ceramic tile, have a long open time.

Tile adhesive Redispersible Polymer Powder is green, building energy-saving, high-quality multi-purpose powder building materials, is an important functional additive essential to dry mix mortar. It can improve the performance of mortar, improve the strength of mortar, improve the adhesive strength of mortar and various substrates, improve the flexibility and variable behavior of mortar, compressive strength, flexural strength, abrasion resistance, toughness, adhesion and water retention capacity, and constructability. The performance of redispersible polymer powder is more powerful, tile adhesive redispersible polymer powder has high bonding capacity and unique performance. Tile adhesive redispersible polymer powder plays a late strength, for the solidity of the project, acid and alkali resistance plays a good effect. Tile adhesive redispersible polymer powder on the role of fresh mortar: to extend the workable time and adjustable time to improve the water retention properties to ensure the hydration of cement to improve the sag resistance (special modified adhesive powder) to improve the workability (easy to work on the substrate is, easy to press the tiles into the adhesive) on the role of the hardened mortar and all types of substrates have a very good adhesion, including concrete, plaster, wood, old tiles, PVC Uniform in Various types of climatic conditions, there is a good deformation ability.

① The effect of adding redispersible polymer powder on tile adhesive fresh mortar:

A. Extend the workable time and adjustable time;

B. Improve the water retention performance to ensure the hydration of cement;

C. Improvement of anti-sagging properties (special modified adhesive powder)

D, improve workability (easy to work on the substrate, easy to press the tiles into the adhesive).

② The role of adding redispersible polymer powder to tile adhesive hardened mortar:

A, and all kinds of substrates have good adhesion, including concrete, plaster, wood, old tiles, PVC;

B. In all kinds of climatic conditions, there is a good ability to strain.

Redispersible polymer powder in the wet mixing state to change the system consistency, smoothness, addingredispersible polymer powder to make cohesion change, after drying to provide a smooth dense surface layer of the adhesive force, improve the gravel, the role of the interface of the air holes, in the case of joining the amount of guaranteed, in the interface of the enriched film, so that tile adhesive flexibility, reduce the modulus of elasticity, to a large extent, absorbed the thermal deformation of stress, and later in the event of water waterproofing, cushioning the temperature and the deformation of the materials are not Consistent. redispersible polymer powder flexibility and rigidity can generally be determined according to the glass transition temperature, glass transition temperature below 0 degrees, partial flexibility. Which one is needed in the mortar powder, generally according to the performance characteristics of the product to determine. Tile adhesive need to choose a better redispersible polymer powder.

The polymer film in polymer-modified mortars has a very important effect in hardening the mortar. The dispersible latex powder distributed at the interface is dispersed and film-forming and plays another key role, that is, to increase the adhesion to the contacted materials. In the microstructure of the interface zone between the powdered polymer-modified tile bonding mortar and the tiles, the film formed by the polymer forms a bridging link between the glass tile, which has a very low water absorption, and the cement mortar matrix. The contact zone between the two different materials is a special high-risk area for shrinkage crack formation and loss of adhesion. Therefore, the ability of the latex membrane to allow shrinkage cracks to heal plays an important role for tile adhesives.